Fix formatting regression in 1.18.0 whereby single-line pipeline reduces indentation level incorrectly

[bergmeister]

PR Summary

Fixes #1187 by excluding single-line pipelines to avoid reduce indentation level incorrectly. This case showed up only when there is already some indentation.

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• This PR is ready to merge and is not Work in Progress.
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[bergmeister]

I applied the suggestions, I have to look at the test failures though, locally it was fine.

[JamesWTruher]

it looks like this isn't quite right based on test failures

[bergmeister]

@rjmholt @JamesWTruher @TylerLeonhardt I fixed the build, it was a simple mistake, I used a break statement when I actually meant to use a continue statement.